Because of copyright laws and general ego, there is always a fear that you're being unoriginal when you're creating. Steal Like an Artist, by Austin Kleon, gives the advice that others have been afraid to give. Allowing yourself to be influenced by other works will help you to grow as an artist.

For me, it's always been a struggle to find time to do all the things I want to do. The Creative Habit, by Twyla Tharp, inspired me to completely rethink the way I look at my schedule. In fact, this very website probably would still be months away if not for the advice laid out here.

Creativity Workout is a book centered around random words. It's about finding connections and value where others may miss it. For prompts, the book just uses a grid of words you pick from at random. The exercises involve taking the random words and trying to find relations between them.